【作者】 周子南； 孝延文； 高新风； 景凤英； 戴莹琨； 吴盛容；

【Author】 Zhou Zinan Xiao Yanwen Gao Xinfeng Jing Fengying Dai Yingkun Wu Shengrong Polymer-Physics Laboratory,Changchun Institute of Applied Chemistry,Academia Sinica,Changchun 130022

【机构】 中国科学院长春应用化学研究所,高分子物理开放实验室；

【摘要】 <正>聚甲基丙烯酸乙酯（PEMA）是聚甲基丙烯酸甲酯（PMMA）的同系物.它的链结构和NMR波谱一直为人们所关注.图1是PEMA的¹³C谱.图中溶剂峰除外,聚合物六个碳的谱峰分在三处.低场一组峰是羧基更多还原

【Abstract】 In this article the chain structure of PEMA was studied by ^H NMR, ¹³C NMR and COSY spectroscopy.Some difficulties in recongnizion of the spectra of PEMA come from the overlap of proton peaks.The assignment of the peaks in spectra of PEMA was discussed deeply with information provided from H-H COSY and C-H COSY spectra.But there are still some problems about the assignment of ¹³C peaks ofβ-CH₂ in tetrad level.Finally the pentad sequences of atactic PEMA were calculated based on the discussion mentioned above.更多还原